Cover for radiators



Vin position. t

UNITED i STATES e PATENT OFFICE.

THOMAS T. ROCKETT, OF PHILADELPHIA, PENNSYLVANIA.

COVER FoR RADIATORS.

SPECIFICATION forming part of Letters Patent No. 406,772, dated July 9, 1889.

Application filed April 2, 1889. Serial No. 305,709. (No model.)

Beit known that I, THOMAS T. RocKETr, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Cast-Iron Tops or Covers for Radiators and I do hereby declare that the following is a full, clear, and eXaet description of the invention, which will enable others skilled in the art to which it appertains to make and use the same,

reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, which form part of this specification. 1

My invention relates to an improved top or hood for hot-air furnace-radiators; and it consists in certain novel features of construction and combinations of parts more fully described hereinafter, and particularly pointed out in the claims. A

Referring to the accompanying drawings, Figure l is an inverted perspective viewA of the cast top. Fig. 2 is a top perspective view of the same. Fig. 3 is a vertical central seetion of a furnace-radiator and the top or hood Heretofore hot-air furnace-radiators, in some instances, have consisted of an annular chamber formed of sheet metal, having si1nilar annular top and bottom plates secured to and closing the top and bottom of the chamber, the tire-box of the furnace beingextended upwardly, and acylindrical chamber located in the open space of the said annular cha1n` ber, with a closed topl and its open bottom resting on said extended portion of the fireboX, and a straight passage within said open space of the annular chamber extending from said cylindrical chamber to the annular chamber, said horizontal passage and cylinder being located within the space of the'annular chamber and formed of sheet metal, and located in a plane beneath the top plate of the chamber; but this construction is exceedinglyv diilicultA and expensive to manufacture. It

cannot be cast, but must be made of sheet metal; hence the cost and labor of production are greatly enhanced.

The object of my invention is to so change the construction of the above-mentioned class of radiators that an improved top or hood for the same can be used, which shall be eX- ceedingly cheap and easy to manufacture and of such form and construction that the entire cap andV transverse flue are cast integral; and also to construct this cap so that there shall be an increased radiating-surface as the products of combustion pass up the vert-ical passage, then across the transverse flue of the hood, and then down into theannular chamber.

On the' drawings the reference-letter o indicates the vertical passage from the fire-box of a stove or furnace, (not shown,) up which the products of combustion pass. The upper end of this passage is closed by a hemispherical dome or cap b, from the side of which a horizontal flue c extends radially, as clearly shown. This flue is, preferably, rounded on top and is closed at its outerextremity, while the lower side of its outer portion rests upon the top ring or plate of an annular chamber c, and the interiors of said flue and chamber communicate through the opening d, and said chamber surrounds the passage a, leaving an annular air-heating space f between the passage or cylinder a and chamber e, and the top of said cylinderis in a plane below that of the dome or cap b and transverse flue. It will thus be seen that the products of. combustion pass up the passage a to the cap b through the transverse flue and down into the annularrchamber, which is provided with a partition g, (partially shown in Fig. 3,) whereby the products of combustion are forced .to travel around the annular vchamber to the exit h, leading to the smoke-pipe or chimney, the partition being located between the discharge end of the transverse ilue and the eXit from the chamber. It will thus be seen that the air passing up Within the casing of the furnace (shown in dotted lines in Fig. 3) is heated by passing in contact with the heated surfaces of the parts througlr the sides of the chamber, which ears are IOD bolted or riveted together. This top or ring, the cap b, and the transverse flue c are all cast in one piece, as shown, having strengthening-pieces extending from the cap b to the ring, and the ring is provided With a transverse opening d, (as before mentioned,) by means of which communication between said flue and annular chamber is established; The lower edge of the cap or dome is also provided with a flange to fit the upper end of the passage a..

This invention consists in this cap or top and transverse ue cast in one piece, thereby greatlyreducing the cost, time, andY labor of production andunanufacture and producing an improved article and increasing the effectiveness and cheapness of the radiator.

Vhat I claim is--l l. The combination, with the passage conveying the products of combustion from the fire-box of a furnace, and an annular chamber provided with an exit and surrounding the passage, of a dome or cap closing the top of said passage, a ring closing the top of said annular chamber, and a horizontal Hue extending radially from said cap and resting upon the top of said ring and opening through the same into said chamber, said ring-flue and cap being cast in one piece separatefrom said passage and chamber.

2. In a hot-air furnace, the combination,

with a vertical passage for the products of combustion, and an ann ular radiator-chamber provided with an exit and into which'said products of combustion are passed, of a dome or cap closing the top of said chamber, aring closing the top of said chamber and located in a plane below the capand a'flue extending radially from said cap to and resting upon the top of said ring, the outer end of the flue being closed and the ring being provided with an opening connecting said chamber and flue, the cap, flue, and ring being cast in one piece, substantially as described.

3. In a hot-air furnace, a vertical passage for the products of combustion, and an annular chamber surrounding the same, into 

